David b



(No Model.)

D. B. HUNT. AUTOMATIC SCREEN EOE PLUMES AND' EITGEES.

No. 365,521. Patented June 28, 1887.

UNITED- STATES- PATENT OFFICEo DAVID B. HUNT, OF ANGELS CAMP, CALIFORNIA.

AUTOMATIC SCREEN FCR FLUMESAND BITCHES.

JPECIPICATION forming part of Letters Patent No. 365,521, dated June 28, 1887. Application tiled September '1, 1 886. Serial Nam-2,945. (No model.)

To all whom it may concern:

Be it known that I, DAVID B. HUNT, of Angels Camp,Oalaveras county,State'of California, have invented an Improvement in Automatic Screens for Flumes and Ditches; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a new and useful screen interposed or let into a flume or ditch, and having forits object the catching and disposition of all dbris-such as leaves, &c.-

which come down with the water from the head of the u me or ditch,and preventing them from passing down to the tank.

My invention consists in an endless traveling screen' located between sections of the iiume or ditch, said screen receiving thewater from the upper section and discharging itinto the continuation of the flume below, the dbris being caughtbyit and ldisposed of.

My invention further consists in the mechanism by which the endless screen is driven, and in minor details of construction and arrangement, all of which Ishallherenafter full describe.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a perspective view of my screen, showing itin its position in the fiume. Fig. 2 is a side elevation of a modified arrangement.

A is one section of the flume, and B is its continuation or other section, which fis in a lower plane than the section A.

C are two drums, one on each side of the flume and parallel therewith. drums passes the endless screen D, the direction of whose travel is at right angles to the fiume. The uppersection of the fiume is above the screen, While the lower section, B, is under its upper fold and is in line with the upper section, being adapted to receive the water from said section.

` The construction and arrangement of the drums and of the screen may be of any suitable character, though in practice I use polygonalsided drums,over which pass two or more endless chains, d,whose links are bars or rods pivoted together by rods d', which are long enough to serve as pivots for all the chains, the links of each chain being held in place by gas-pipe sections dz; These chains, thus united, become a Over these y carrier on which the sections d3 of the screen are laid and secured.

- The means by which the endless screen is The operation of the device is as follows:`

The water coming down the section A brings With-it a lot of leaves and other dbris which usually goes on down to the tank; but where my device is interposed the leaves and dbris are caught upon the screen D, while the water passes through into the lower section of the fiume. The motion of the screen carries the leaves and debris off to one side and discharges them, presenting continually a free surface to the downcoming water.

If found necessary, I may have a brush, II, for keeping the meshes of the screen open and preventing it fr'ombecoming clogged. In Fig. 2 Ishow a slightly-modified arrangement. The sections A and B of the flume are in line with the endless screenDgvhich is placed at aslight downward inclination, as shown. rIhe-foree of the downcoming current, assisted by the weight of the dbris, causes the screen to have a slight movement sufficient to carry the dbris off. The lower section of the flume would in this case be covered for a short distance, to preventthe leaves on the screen from getting in again.

Having thus described my invention, what.

I claim as new, and desire to secure by Letters Patent, is v I. The combination, with the upper and `lower sections of a fiume or ditch, of an endless screen interposed between said sections,wl1ere by the water passes through it while the leaves i and dbris are caught and carried ofi", substantially as herein described;

i 2. The combination, with the upper and lower sections of a flume or ditch, of an endless screen interposed or let into the ilume or ditch between the sections, whereby'the leaves and dbris are caught and carried oft', and a power mechanism in the fiume operated by the flow 0f water and affecting the travel of the screen, substantially as herein described.

3. In combination with the upper and iower sections, A and B, of a fiume or ditch, the endless traveling screen D, interposed between the sections, whereby the water passes through while the leaves and debris are carried oli, substantially as herein described.

et. In combination with the upper and lower sections, A and B, of a fiume or ditch, the drums C on each side thereof, the endless screen D, passing over said drums and interposed between the sections of the flume or ditch, whereby the water passes through and the leaves and debris are caught, and means for operating the drums to cause the travel of the screen, substantially as herein described.

5. A screen mechanism for iumes or ditches, comprising the drums C, the endless screen D, interposed or let into the flume or ditch and carried by the drums, the waterwheel E, operated by the flow of water in said stream or ditch, and power-transmitting mechanism between the wheel and the drum C, by

which the screen is driven, substantially as herein described.

G. In combination with the upper and lower sections, A and B, of a flume or ditch, the drums C upon each side thereof, the endless screen D, passing over the drums and interposed between the sectionsA and B, the waterwheel E in the flume or ditch, the pulleys c g, the belt F, the counter-shaft G, and the gears g c, by which the screen is caused to travel, substantially as herein described.

7. In combination with the sections A and B of a lume or ditch, the drums C, the endless screen D, interposed between the sections, the water-wheel E, and mechanism for drivingthe endless screen from said wheel, and the brush I1', by which the meshes of the screen are kept open, substantially as herein described.

In witness whereof I have hereunto set my hand.

D AVID B. HUNT.

Vitnesses:

S. H. NoUnsn, C. D. COLE. 

